Frictional shock-absorber.



f F. SCHIMMEL.

TRICTIONAL SHOCK ABSORBBR. APPLIUATION FILED 00130, 1'911.

1,097,050` :pfpateneamayglmi f a, 10Q/- BjlSAttorms-f the otlier, and

@Eel itil lill? FBIEOL'N SGEM'ML, F FARBAUL', MINNESOTA. i

emocional' encon-nemmeno.

Speciceton of Letters Patent.

Patent-e may io, 1914.

Applcetion filed october 30, i813.. Serial No. 857,663.

To al@ l207101317, t may @macroy l@ it known that l, iFRmoL'rN Seminaren, a citizen of the United States, residing"at Faribault, in the county of Rice and State of Minnesota, have invented certain new :ind useful improvements in Frictionel Shocktbsorbers; and l do hereby declare the followingr to be a toll, clear, and exact description oit the invention, such as will enable others skilled in the art to which it uppertains to make and use the seme.

My invention has for its object to provide an extremely simple. and highly'efticient friotionel shock absorber for automobiles and other vehicles. "And to such ends, generally stated,A the invention consists of 'the novel devices and combinations of devices hereinafter described end defined in the claims.

ln the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to'the drawings: Figure l is a view in side ele. *ation showing the improved shock ilisorberg and Fig. a pien View oi certain of the ports shown inFig. l.

The munernls l and 9, indicate respectively the upper and lower portions ot e double elliptical spring, portions of which ere broken away. From a broad point oit View, the parts 1 and ure spring connected niembers movable one in respect to the other. applied to an automobile,` they yieldingly support the body from the running gear, preferably in the usual Way. portions ot' brackets are rigidly secured, preferably b v ordinary nut equippc l yokes el.

rlf'he nui'neral indicates e pair or" toggle levers one of which is inverted in respect to the intermediate joints ci which are pivotall'y connected, one to the upper and the other to the lower bracket 3. he outer ends of the toggles 5 ere pivotally connected at one side to the outer end el a friction bar or plunger 6, ond, et the other end, to a. head block 7. A pair of heavy leaf springs are connected to the heed bloeit 7, by a pair of nut equipped bolts Q andJO. 'lf he treo enls of these springs 8 :ire made simon-shaped so 'that 'they embrace und maintain engagement with the it'ritt'ion bur 6,- the letter being preferably mede round in cross section. The tension o'gt the springs 8 on the bar (l majrbe varied by adjustments of the nut on the bolt l0. Between the ytion springs 8, and head 7.

To the contrat the spring members l and 2,`

pointsmerlted 6a und C, the friction bar or plunger G is gradually reduced in diameter to an intermediate point. Y

lj nder normal load and under normaleonditions, the ends of the springs 8 are engaged with the smallest.- diemeter of the bar section andi)b and hence Willhave a compex atively light trictionel engagement with the said ber (i. licence, when running on smooth roads, the friet-ion device will oiervery to those vibratoryA moveslight resistance mente which imparted to the Vehicle body.' r'his just what desired because the springs properly cerry the vehicle body on smooth roads. lnrnnning over rough roads, or when the vehicle body is given considerable vibration, the movements of the s rings will be retarded by the friction deyice und sudden 'jars and movements which would otherwise be produced by recoil of the springs is prevented.

It is importent to always form obtuse angles, stated, the members-v of the toggles are valways et an acute angle to the rictionel resistance device made up of the bar 6, fric- Hence, it tollonis that the movement ot' the Jfriction bar G iu respect to the friction springs 8 will be very much less than the movement of the spring' members .i and Z in respect to each other. This relatively short. movement in a device .of this kind, wherein there is more or play between the 'joints of the togf gles, causes the friction' device to remain inactive, or zipj i' xiiriatcly so,` under those slight movements which are- `sggiven to the vehicle body when running on smooth roads. Thus, the elasticity of the vehicle springs is maintained under ordinary conditions an 'the Jfriction device is rendered operative .to absorb or prevent shocks or violent movenote that the toggles 5 ments that `wcuild otherwise be transmitted: 'i

rough l. The combination with relatively movor, otherwise able spring connected members, of o pairio buckled togglcs having their interrevei'sely lminis connected toseid members.

lll

n friction bar connected. to one extremity of pair of opposmgmembers seid toogeies, und {"b connecte l to the other extremity of ,said tog- Agies and 'frictionally engaging' said bar. il. The combination with the upper and lower portions of en elliptical spring, of a 

